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A platinized stainless steel fiber with in‐situ coated polyaniline/polypyrrole/graphene oxide nanocomposite sorbent for headspace solid‐phase microextraction of aliphatic aldehydes in rice samples
Author(s) -
Ghiasvand Alireza,
Nasirian Afagh,
Koonani Samira,
Nouriasl Kolsoum
Publication year - 2017
Publication title -
biomedical chromatography
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.4
H-Index - 65
eISSN - 1099-0801
pISSN - 0269-3879
DOI - 10.1002/bmc.4024
Subject(s) - solid phase microextraction , polypyrrole , divinylbenzene , nanocomposite , polyaniline , extraction (chemistry) , sorbent , fiber , polydimethylsiloxane , graphene , chemistry , desorption , oxide , in situ polymerization , polymerization , materials science , chemical engineering , adsorption , chromatography , gas chromatography–mass spectrometry , polymer , composite material , mass spectrometry , organic chemistry , styrene , nanotechnology , copolymer , engineering
The surface of a stainless steel fiber was made larger, porous and cohesive by platinizing for tight attachment of its coating. Then it was coated by a polyaniline/polypyrrole/graphene oxide (PANI/PP/GO) nanocomposite film using electrochemical polymerization. The prepared PANI/PP/GO fiber was used for headspace solid‐phase microextraction (HS‐SPME) of linear aliphatic aldehydes in rice samples followed by GC‐FID determination. To achieve the highest extraction efficiency, various experimental parameters including extraction time and temperature, matrix modifier and desorption condition were studied. The linear calibration curves were obtained over the range of 0.05–20 μg g −1 ( R 2 > 0.99) for C 4 –C 11 aldehydes. The limits of detection were found to be in the range of 0.01–0.04 μg g −1 . RSD values were calculated to be <7.4 and 10.7% for intra‐ and inter‐day, respectively. The superiority of the prepared nanocomposite SPME fiber was established by comparison of its results with those obtained by polydimethylsiloxane, carbowax–divinylbenzene, divinylbenzene–carboxen–polydimethylsiloxane and polyacrylate commercial ones. Finally, the nanocomposite fiber was used to extract and determine linear aliphatic aldehydes in 18 rice samples.